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changed gl_frame_buffer Xmax and Ymax to be exclusive boundary values

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This commit is contained in:
Brian Paul
2000-09-08 21:28:04 +00:00
parent e18e0e98fe
commit 48c6a6ecd2
7 changed files with 57 additions and 39 deletions
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14
src/mesa/main/state.c
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@@ -1,4 +1,4 @@
/* $Id: state.c,v 1.24 2000/09/07 15:45:27 brianp Exp $ */
/* $Id: state.c,v 1.25 2000/09/08 21:28:04 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -892,8 +892,8 @@ void gl_update_state( GLcontext *ctx )
/* update scissor region */
ctx->DrawBuffer->Xmin = 0;
ctx->DrawBuffer->Ymin = 0;
ctx->DrawBuffer->Xmax = ctx->DrawBuffer->Width-1;
ctx->DrawBuffer->Ymax = ctx->DrawBuffer->Height-1;
ctx->DrawBuffer->Xmax = ctx->DrawBuffer->Width;
ctx->DrawBuffer->Ymax = ctx->DrawBuffer->Height;
if (ctx->Scissor.Enabled) {
if (ctx->Scissor.X > ctx->DrawBuffer->Xmin) {
ctx->DrawBuffer->Xmin = ctx->Scissor.X;
@@ -901,11 +901,11 @@ void gl_update_state( GLcontext *ctx )
if (ctx->Scissor.Y > ctx->DrawBuffer->Ymin) {
ctx->DrawBuffer->Ymin = ctx->Scissor.Y;
}
if (ctx->Scissor.X + ctx->Scissor.Width - 1 < ctx->DrawBuffer->Xmax) {
ctx->DrawBuffer->Xmax = ctx->Scissor.X + ctx->Scissor.Width - 1;
if (ctx->Scissor.X + ctx->Scissor.Width < ctx->DrawBuffer->Xmax) {
ctx->DrawBuffer->Xmax = ctx->Scissor.X + ctx->Scissor.Width;
}
if (ctx->Scissor.Y + ctx->Scissor.Height - 1 < ctx->DrawBuffer->Ymax) {
ctx->DrawBuffer->Ymax = ctx->Scissor.Y + ctx->Scissor.Height - 1;
if (ctx->Scissor.Y + ctx->Scissor.Height < ctx->DrawBuffer->Ymax) {
ctx->DrawBuffer->Ymax = ctx->Scissor.Y + ctx->Scissor.Height;
}
}
}